EP0277843A2 - Ozon adsorbierendes und zerstörendes Mittel und Methode für seine Anwendung - Google Patents
Ozon adsorbierendes und zerstörendes Mittel und Methode für seine Anwendung Download PDFInfo
- Publication number
- EP0277843A2 EP0277843A2 EP88301002A EP88301002A EP0277843A2 EP 0277843 A2 EP0277843 A2 EP 0277843A2 EP 88301002 A EP88301002 A EP 88301002A EP 88301002 A EP88301002 A EP 88301002A EP 0277843 A2 EP0277843 A2 EP 0277843A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- ozone
- temperature
- gas
- high silica
- ppm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title claims abstract description 96
- 238000000034 method Methods 0.000 title claims description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 69
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000010457 zeolite Substances 0.000 claims abstract description 44
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 42
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 33
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 14
- 150000001768 cations Chemical class 0.000 claims abstract description 5
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 5
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 5
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 5
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052593 corundum Inorganic materials 0.000 claims abstract 3
- 229910001845 yogo sapphire Inorganic materials 0.000 claims abstract 3
- 239000007789 gas Substances 0.000 claims description 36
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 3
- 229910001413 alkali metal ion Inorganic materials 0.000 claims description 3
- 229910001420 alkaline earth metal ion Inorganic materials 0.000 claims description 3
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 claims description 3
- 150000002500 ions Chemical class 0.000 claims 1
- 229910001868 water Inorganic materials 0.000 description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000003463 adsorbent Substances 0.000 description 8
- 238000001179 sorption measurement Methods 0.000 description 8
- 238000000354 decomposition reaction Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 238000012856 packing Methods 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 229910001882 dioxygen Inorganic materials 0.000 description 4
- 239000008188 pellet Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000002808 molecular sieve Substances 0.000 description 3
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 3
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 3
- 229910000323 aluminium silicate Inorganic materials 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 241000219823 Medicago Species 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 229910052809 inorganic oxide Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000006385 ozonation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8671—Removing components of defined structure not provided for in B01D53/8603 - B01D53/8668
- B01D53/8675—Ozone
Definitions
- the present invention relates to an ozone adsorbing and decomposing agent, more particularly to an ozone adsorbing and decomposing agent which can be suitably used for removing ozone from, for example, ozone-containing air discharged from a wastewater treatment process using ozone, and to a method of using same.
- the general purpose zeolite has a high ozone decomposing ability when active, the zeolite is highly hydrophilic but the activity thereof is remarkably lowered by moisture adsorption, and thus a problem arises in that it can not be used in a system with a high moisture content.
- an amorphous inorganic oxide such as silica gel is also hydrophilic, but has a problem of a low activity.
- most metal oxide catalysts have a problem in that they are deactivated by, for example, water or carbon dioxide.
- the objects of the present invention are to eliminate the above-mentioned disadvantages of the prior art and to develop an ozone adsorbing and decomposing agent which can effectively remove ozone from a gas with a relatively high water content by solving the problems in the methods of removing ozone in a gas of the prior art as described above, namely the reaction of activated charcoal with ozone, and inability to effectively remove ozone by adsorption or decomposition due to the hydrophilic nature of the conventional zeolites in a system with a high moisture content.
- an ozone adsorbing and decomposing agent comprising a crystalline zeolite represented by the formula (I):
- a method for decomposing ozone which comprises treating an ozone-containing gas with an ozone adsorbing and decomposing agent comprising a crystalline zeolite represented by the formula (I):
- the method for removing ozone by using a conventional zeolite is known in the art, but because the prior art method uses a zeolite molecular sieve which is a crystalline aluminosilicate as the decomposing agent, it is highly hydrophilic and problems arise when it is used in a system containing moisture, as described above.
- the present inventors made an investigation into the development of an adsorbing agent capable of effectively adsorbing and removing ozone with a high activity even in a system containing water, and consequently, found that ozone could be removed by adsorption and decomposition by using a high silica zeolite represented by the above formula (I), without a substantial lowering of activity even in a system containing moisture.
- the ozone adsorbing and decomposing agent according to the present invention is represented by the above-mentioned formula (I), and such a high silica zeolite is known in the art, typically as disclosed in Japanese Unexamined Patent Publication (Kokai) No. 54-72795, or is commercially sold under the trade name of Silicalite from Union Carbide Co.
- Khokai Japanese Unexamined Patent Publication
- Silicalite from Union Carbide Co.
- no description is given in any prior art, including the above Publication, that can teach those skilled in the art that a high silica zeolite has extremely effective properties of ozone removal by adsorption and decomposition.
- the high silica zeolite of the above formula (I) does not exhibit remarkable ion-exchange characteristics, different from the crystalline aluminosilicate generally known as a zeolite molecular sieve, and in further contrast to the conventional zeolite molecular sieve which exhibits a strong hydrophilic property and is used for high degree drying of a fluid, the high silica zeolite exhibits a water repellent and hydropholic property.
- high silica zeolites preferable for the object of the present Invention are those In which M is a hydrogen ion, ammonium ion, an alkali metal ion such as Na or K, an alkaline earth metal ion such as Ca or Mg, x is 0 to 2, y > 20, and z is 0 or a positive number, preferably 0 to 10, more preferably 2 to 4.
- the high silica zeolite can be synthesized by the method described in, for example, the above-mentioned Japanese Unexamined Patent Publication (Kokal).
- a particularly preferably high silica zeolite has a specific gravity of 1.99 ⁇ 0.05 g/cc at 25° C when synthesized as such, a specific gravity of 1.70 ⁇ 0.05 g/cc after calcination (at 600° C in air for one hour), and average refractive indices of 1.48 ⁇ 0.01 and 1.39 ⁇ 0.01, respectively.
- the high silica zeolite according to the present invention can retain the adsorbed ozone without decomposition at a relatively low temperature (e.g., -10 to +20° C), it can be used as an ozone storage vessel. For example, by placing a high silica zeolite system having ozone adsorbed thereon under a reduced pressure, or by flowing a carrier gas such as oxygen or air through a gas inlet, the adsorbed ozone can be recovered. On the other hand, at a relatively higher temperature (e.g., about 28.5 to 50°C), the adsorbed ozone is decomposed and, therefore, ozone can be effectively removed from, for example, an exhaust gas containing ozone treatment facilities. Further, as mentioned above, since the activity of the high silica zeolite will not be substantially lowered by moisture, even when moisture is contained in the exhaust gas, the ozone can be effectively removed.
- a relatively higher temperature e.g., about 28.5 to 50°C
- a special method is not required, and a general method can be practiced by, for example, filling the high silica zeolite into an ozone adsorbing vessel, introducing an ozone containing gas through the inlet at the lower part of the adsorbing vessel, passing the gas through the filled bed of high silica zeolite, and discharging the gas through the upper part of the vessel.
- the decomposition of ozone in a gas according to the present invention can be effected by using the ozone adsorbing and decomposing agent comprising the high silica zeolite according to the present invention at a temperature of 40° C or more, preferably 45 to 70° C, in any conventional manner known in the art.
- the ozone contained in the gas discharged from a drinking water treatment process can be fed by a blower to a decomposition vessel filled with the high silica zeolite after heating to a temperature of 40° C or more, and the ozone can be completely decomposed and discharged into the air.
- a specific feature according to the present invention is that the ozone containing discharged gas can be introduced as such without preliminary drying, and further, the ozone generated from electrical Instruments, including, for example, electrical instruments for domestic use, can be made 0.1 ppm (V) or less.
- the high silica zeolite according to the present invention for preservation or storage, for example, this can be accomplished by packing the high silica zeolite in a vessel made of stainless steel provided with, for example, a gas Introduction pipe, a gas discharging pipe, a gas distributor, a wire mesh screen, and an rupture disc, and allowing ozone gas to be adsorbed thereon.
- a vessel made of stainless steel provided with, for example, a gas Introduction pipe, a gas discharging pipe, a gas distributor, a wire mesh screen, and an rupture disc, and allowing ozone gas to be adsorbed thereon.
- a cylindrical stainless steel vessel having an Inner volume of 3 liters is filled with 2 kg of Silicalite (high silica zeolite produced by Union Carbide) 10 x 60 mesh product
- about 14 g of ozone can be stored under normal pressure at 20° C.
- the ozone thus stored can be recovered by, for example, passing air or oxygen through a gas discharging pipe.
- the temperature of the adsorbent layer during the test was measured by a thermometer inserted to a depth of 46 mm from the inlet end of the above high silica zeolite packing pipe, and the ozone concentration was measured by a DAS1B1 MODEL DY-1500.
- the ozone concentration in the outlet gas became 650 ppm (V) at 30° C, 200 ppm (V) at 35° C, and 0 ppm (V) at 40° C.
- An aluminum pipe having an inner diameter of 18.5 mm, an outer diameter of 22 mm, and a height of 553 mm was filled with 70 ml of the above Silicalite pellets, and the test was conducted by introducing an ozone-oxygen gas mixture with an ozone gas concentration of 500 ppm (V) therein, as described in Example 1, at a flow rate of 2 liter/min.
- Example 1 an aluminum pipe having an inner diameter of 18.5 mm, an outer diameter of 22 mm and a height of 553 mm was filled with 58 g of pellets having a representative diameter of 1.6 mm and a representative length of 1.2 mm, and ozonized air was introduced by feeding a starting air having a relative humidity of RH 430/0 at 17° C without drying into an ozone generator.
- the ozone concentration at this time was from 575 ppm (V) to 650 ppm (V).
- the ozone concentration at the pipe outlet when the temperature of the ozonized air was 16.2°C was 500 to 510 ppm, but when the packed layer temperature was gradually elevated by heating with a mantle heater, the ozone concentration In the outlet gas became 0 ppm (V) at a layer temperature of 51.1°C.
- Figure 3 shows the relationship between the inner layer temperature and the ozone concentration.
- Example 2 The same stainless steel pipe as used in Example 1 was packed with 325.8 g of high silica zeolite produced by Union Carbide Corp. having a representative diameter of 10 x 60 mesh (trade name: Silicalite), and then three gas humidifying bottles containing 450 g of water at 16° C were connected in series thereto, and oxygen was introduced therein through a pressure reduction valve, from an oxygen bomb, and saturated with water, followed by ozonization by an ozonizer produced by Chiyoda Medics Co. At this time, to prevent condensation of the water, the ozonizer outlet temperature was made 35°C by controlling the cooling of the ozonizer.
- the gas mixture containing ozone-oxygen-water generated from the ozonizer was introduced into the above Silicalite in the pipe, and while the mixture was heated by a mantle heater, the relationship between the change in the concentration of the ozone and the temperature was measured.
- the ozone concentration in the Silicalite in the pipe at this time was from 2730 ppm (V) to 2840 ppm (V).
- the relationship between the filling layer temperature and the ozone concentration at the outlet is shown in Fig. 4.
- Example 4 an aluminum pipe having an inner diameter of 18.5 mm, an outer diameter of 22 mm ; and a height of 553 mm was packed with 55.2 g of pellets having a representative diameter of 1.6 mm and a representative length of 1.1 mm of the conventional synthetic Na-form-X zeolite (product name: 13X, produced by Union Showa K.K.) to which was previously loaded 4.6 g of water per 100 g of the adsorbent. When 4 liter/min.
- a stainless steel pipe having a nominal diameter of 21/2 inches (21/2B) and a length of 300 mm was packed with 130 g of a high silica zeolite having a representative particle size of 10 x 60 mesh produced by Union Carbide Co. (trade name: Silicalite).
- an ozone-oxygen mixture generated by an ozonizer produced by Chiyoda Medics Co. was introduced into this pipe at a flow rate of 2 liter/min., and the ozone adsorbing ability and desorbing ability of Silicalite were measured.
- the temperature of the adsorbent layer during the test was measured by a thermometer inserted to a depth of 46 mm from the inlet end of the above-mentioned Silicalite packing pipe. The temperature during the measurement was 22.0 to 22.3° C.
- the ozone concentration was measured by a DAS1B1 MODEL DY-1500.
- Table 2 and Table 3 are also shown in the graph in Fig. 6.
- the adsorption amount of 0 3 in this test was calculated to be 0.17 g, while the ozone amount desorbed was calculated to be 0.11 g by graphical integration.
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Separation Of Gases By Adsorption (AREA)
- Treating Waste Gases (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23506/87 | 1987-02-05 | ||
| JP2350687 | 1987-02-05 | ||
| JP167822/87 | 1987-07-07 | ||
| JP62167822A JPS644220A (en) | 1987-02-05 | 1987-07-07 | Adsorbing and decomposing agent of ozone and usage thereof |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0277843A2 true EP0277843A2 (de) | 1988-08-10 |
| EP0277843A3 EP0277843A3 (en) | 1988-09-28 |
| EP0277843B1 EP0277843B1 (de) | 1992-11-25 |
Family
ID=26360873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19880301002 Expired EP0277843B1 (de) | 1987-02-05 | 1988-02-05 | Ozon adsorbierendes und zerstörendes Mittel und Methode für seine Anwendung |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0277843B1 (de) |
| JP (1) | JPS644220A (de) |
| DE (1) | DE3876107T2 (de) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0387044A1 (de) * | 1989-03-07 | 1990-09-12 | Sakai Chemical Industry Co., Ltd., | Katalysator und Verfahren für die Zersetzung von Ozon |
| EP0901815A1 (de) * | 1997-09-10 | 1999-03-17 | Basf Aktiengesellschaft | Katalysator in Tablettenform |
| US5951957A (en) * | 1996-12-10 | 1999-09-14 | Competitive Technologies Of Pa, Inc. | Method for the continuous destruction of ozone |
| EP0948996A3 (de) * | 1998-04-03 | 1999-10-27 | Mitsubishi Heavy Industries, Ltd. | Ozonadsorptionsmittel, Formteil zur Adsorption von Ozon und Verfahren zu dessen Herstellung |
| DE102010003880A1 (de) | 2010-04-12 | 2011-10-13 | Durtec Gmbh | Mineralische Gasadsorber zur Beseitigung von Ozon aus Abluft/Abgas, Verfahren zu deren Herstellung und Regenerierung |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5462905A (en) * | 1992-08-21 | 1995-10-31 | Toyota Jidosha Kabushiki Kaisha | Exhaust gas purifying catalyst |
| JPH0929093A (ja) | 1995-07-21 | 1997-02-04 | Toyota Central Res & Dev Lab Inc | 排ガス浄化用触媒及びその製造方法 |
| JP7221057B2 (ja) * | 2019-01-09 | 2023-02-13 | 株式会社荏原製作所 | 窒素酸化物を含むガスの処理装置、および処理方法 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4101296A (en) * | 1975-04-17 | 1978-07-18 | W. R. Grace & Co. | Ozone decomposition and electrodesorption process |
| JPS53108890A (en) * | 1977-03-04 | 1978-09-22 | Teruo Takei | Catalyst and method for decomposing ozone gas |
| JPS5547202A (en) * | 1978-09-29 | 1980-04-03 | Osaka Oxgen Ind Ltd | Treating method for ozone contained in gas |
| BR8000226A (pt) * | 1979-01-15 | 1980-10-07 | Mobil Oil Corp | Zeolito zsm-11, processo para sua preparacao, e processo para conversao de uma carga organica |
-
1987
- 1987-07-07 JP JP62167822A patent/JPS644220A/ja active Pending
-
1988
- 1988-02-05 EP EP19880301002 patent/EP0277843B1/de not_active Expired
- 1988-02-05 DE DE19883876107 patent/DE3876107T2/de not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0387044A1 (de) * | 1989-03-07 | 1990-09-12 | Sakai Chemical Industry Co., Ltd., | Katalysator und Verfahren für die Zersetzung von Ozon |
| US5951957A (en) * | 1996-12-10 | 1999-09-14 | Competitive Technologies Of Pa, Inc. | Method for the continuous destruction of ozone |
| EP0901815A1 (de) * | 1997-09-10 | 1999-03-17 | Basf Aktiengesellschaft | Katalysator in Tablettenform |
| US6521197B1 (en) | 1997-09-10 | 2003-02-18 | Basf Aktiengesellschaft | Catalytical process of methanol reformation |
| EP0948996A3 (de) * | 1998-04-03 | 1999-10-27 | Mitsubishi Heavy Industries, Ltd. | Ozonadsorptionsmittel, Formteil zur Adsorption von Ozon und Verfahren zu dessen Herstellung |
| US6254962B1 (en) | 1998-04-03 | 2001-07-03 | Mitsubishi Heavy Industries, Ltd. | Ozone adsorbent, ozone-adsorbing molded product, and method of making same |
| DE102010003880A1 (de) | 2010-04-12 | 2011-10-13 | Durtec Gmbh | Mineralische Gasadsorber zur Beseitigung von Ozon aus Abluft/Abgas, Verfahren zu deren Herstellung und Regenerierung |
| WO2011128073A2 (de) | 2010-04-12 | 2011-10-20 | Durtec Gmbh | Verwendung von natürlichen mineralischen granulaten als gasadsorber zur beseitigung von gasförmigen schadstoffkomponenten |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0277843B1 (de) | 1992-11-25 |
| DE3876107D1 (de) | 1993-01-07 |
| EP0277843A3 (en) | 1988-09-28 |
| DE3876107T2 (de) | 1993-05-27 |
| JPS644220A (en) | 1989-01-09 |
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